1 地形地貌 geographic and geomorphic工程地质条件 engineering geological conditions地 形 地 貌 条 件 geographic and geomorphic conditions地形 land form地貌 geomorphology, relief微地貌 microrelief地貌单元 landform unit, geomorphic unit坡度 grade地形图 relief map河谷 river valley河道 river course河床 river bed(channel)冲 沟 gully, gulley, erosion gully , stream(brook)河漫滩 floodplain(valley flat)阶地 terrace冲积平原 alluvial plain三角洲 delta古河道 fossil river course, fossil stream channel冲积扇 alluvial fan 洪积扇 diluvial fan坡积裙 talus apron分水岭 divide盆地 basin岩溶地貌 karst land feature, karst landform溶洞 solution cave, karst cave落水洞 sinkhole土洞 Karstic earth cave2 地层岩性地层 geostrome (stratum, strata)岩性 lithologic character, rock property岩体 rock mass岩层 bed stratum岩层 layer, rock stratum母岩 matrix, parent rock相变 facies change硬质岩 strong rock, film软质岩 weak rock硬质